There are many nonparametric tests that have been developed over the years. Explain what nonparametric tests are and why they were developed. As part of your answer explain why it might be preferable to use a nonparametric test even when a parametric test could be used.

Compare and contrast the characteristics of parametric and non-parametric test methodologies. Give examples of when to use each.
Discuss the role of variance in difference of means hypothesis testing. Is it critical to the result? Why or why not. Why do we care?

There are many skills necessary to live and adapt effectively in certain environments. Tests are sometimes constructed and then "local norms" are created for that area. Many parts of the world do actually have very similar IQ tests to those used in the United States and Canada. They are created and normed on their own continent.